strlcpy restricted to array length.

strlcpy restricted to array length.

For kaprocs, size of 'caller.userID.name' is defined by a different macro
than size of 'name'.  They can become out of sync, so restricting to
size of dest.
For scout and afsmon-win, the if statement determined that the string
was longer than the dest buffer.  So we are using the size of the buffer
as the max length to setup for truncation.
(via cppcheck)

Change-Id: I38a2bff1d59d17ea02e136c35cd5b132a75a8ed8
Reviewed-on: https://gerrit.openafs.org/13163
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>